Third Space Marylebone (2026): Facilities, Pool, Classes, Membership & Review
A luxury health club at The Marylebone Hotel with an 18m pool, full spa, two floors of training and an award-winning class timetable. Here’s an independent look at the facilities, classes and how membership works.
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Quick Overview: Third Space Marylebone
Third Space Marylebone is a luxury members’ health club set within The Marylebone Hotel in Marylebone Village, central London. Open since 2011, it offers two floors of training space with bespoke functional rigs, a Wattbike area, a sprint/sledge track and a dedicated strength zone, a purpose-built studio for yoga, barre and Pilates, and a recently redeveloped spa with an 18-metre pool, sauna and steam room. The boutique-hotel-style changing rooms come with luxury products, towels and an optional wash-dry-fold service.
It’s part of the Third Space group, so a group membership opens access to all the London clubs. Members consistently praise the cleanliness, equipment and class quality. Membership prices aren’t published as a fixed list (there’s typically a joining fee) — contact the club for a current quote.
What this guide covers
If you’re considering joining Third Space Marylebone, this independent 2026 guide walks through the facilities, pool, classes and practicalities. Going Private UK is editorially independent and not affiliated with Third Space; we cover gyms and wellbeing alongside private healthcare, and may earn commission when readers compare health cover through our links.
About Third Space Marylebone
Third Space was founded in Soho in 2001 and has grown into a collection of premium London health clubs built for people who take training seriously. The Marylebone club opened at The Marylebone Hotel in 2011 and has operated there ever since — a track record that gives it a settled, polished feel. It sits in Marylebone Village, one of central London’s most refined neighbourhoods, and suits members who want serious training facilities and a genuine spa in calm, design-led surroundings. Hotel guests at The Marylebone enjoy complimentary access, but it’s primarily a members’ club.
Facilities at Third Space Marylebone
- Two floors of training space with the latest performance equipment
- Bespoke functional rigs, a sprint/sledge track and a dedicated strength-training area
- Wattbike area for performance cycling
- Purpose-built studio for yoga, barre and Pilates
- Recently redeveloped spa with an ~18-metre pool, sauna and steam room, plus luxury treatments
- Boutique changing rooms with premium skin/hair products, fluffy towels and an optional wash-dry-fold laundry service
- Physiotherapy option and expert personal training
- Third Space app for class booking and on-demand sessions when you’re away
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Pool & Spa
One of the club’s highlights is its recently redeveloped spa, centred on an indoor pool of around 18 metres for lane swimming and post-workout relaxation, with a sauna and steam room alongside. Luxury spa treatments are available too, making the club a genuine wellness destination rather than just a gym. Members frequently single out the pool and the quality of the changing/recovery facilities in their reviews.
Classes & Training
Third Space Marylebone runs a large, well-regarded class timetable across its studios, which the brand describes as award-winning and led by leading instructors. Formats typically include:
- Strength & conditioning — including signature small-group sessions
- HIIT and full-body burn classes
- Cycle (Wattbike/performance cycling)
- Combat formats
- Mind & body — yoga, barre and Pilates in the dedicated studio
- LGA (legs, glutes & abs) and other targeted classes
Classes are booked through the Third Space app and can be in high demand, so booking ahead is advised. If studio classes are your focus, see also our guide to Pilates near me.
Membership & Prices
💡 On membership pricing
Third Space membership is premium and quoted individually rather than published as a fixed list, and there’s typically a joining fee (around £100 has been cited). A single-club membership covers Marylebone, while a group membership gives access to all Third Space clubs across London — useful if you move between areas. Access to newer or busy clubs can be subject to a waitlist. For an accurate, current price, contact the club directly. For comparison with other premium clubs, see our guides to Third Space Soho and Third Space Canary Wharf.
Many members also weigh up whether their health insurance offers gym or wellbeing benefits. While there’s no direct Third Space–insurer partnership, programmes like Vitality’s Active Rewards reward regular gym use with perks — see Vitality & Apple Watch, gym & health insurance rewards and health insurance with gym membership.
Reviews & What Members Say
Third Space Marylebone reviews well with members, who consistently highlight the spotless cleanliness, high-quality and well-maintained equipment, the variety and quality of classes, and a friendly, attentive team. The pool, spa and boutique changing rooms come up positively, and several members mention the personal, community feel of the club (it’s smaller than some Third Space sites, which some prefer). As with any gym, opinions vary — a few find it less “luxury” than expected — so for the current picture we’d suggest checking live reviews on Google and Trustpilot, and ideally booking a tour or day pass to see it for yourself.
Location & Access
- Where: The Marylebone Hotel, Marylebone Village, central London
- Parking: no dedicated parking — public transport or nearby car parks recommended
- Transport: excellent central links (Marylebone, Baker Street and Bond Street are all close)
- Hotel guests: guests at The Marylebone Hotel get complimentary access
The bottom line on Third Space Marylebone
Third Space Marylebone is one of central London’s most polished luxury health clubs — two floors of serious training, a redeveloped spa with an ~18m pool, an award-winning class timetable and boutique-hotel changing rooms, all in the calm setting of Marylebone Village. For members who want premium fitness and genuine recovery facilities in one place, it’s a strong choice.
For exact membership prices and current availability, contact the club directly, as Third Space quotes individually and some clubs run waitlists.
And while you’re investing in your health and fitness, it’s a good moment to check your health cover too — review your current policy or compare the UK’s top providers free here.
Frequently Asked Questions — Third Space Marylebone
Where is Third Space Marylebone?
It’s at The Marylebone Hotel in Marylebone Village, central London, with excellent transport links (Marylebone, Baker Street and Bond Street nearby). There’s no dedicated parking, so public transport or nearby car parks are recommended.
Does Third Space Marylebone have a pool?
Yes — a recently redeveloped spa centred on an indoor pool of around 18 metres, with a sauna and steam room and luxury treatments alongside. The pool is used for both lane swimming and post-workout relaxation.
What facilities does Third Space Marylebone have?
Two floors of training space with bespoke functional rigs, a sprint/sledge track, a strength zone and a Wattbike area; a purpose-built yoga, barre and Pilates studio; a spa with an ~18m pool, sauna and steam room; boutique changing rooms with premium products and an optional laundry service; physiotherapy and personal training; and the Third Space app for booking and on-demand classes.
How much is Third Space Marylebone membership?
Third Space is a premium club and quotes membership individually rather than publishing a fixed price, typically with a joining fee (around £100 has been cited). A single-club membership covers Marylebone; a group membership covers all London clubs. Contact the club for a current quote, as access can be subject to a waitlist.
What classes does Third Space Marylebone offer?
A large, award-winning timetable including strength and conditioning, HIIT, cycle, combat, yoga, barre, Pilates and targeted classes such as LGA. Classes are booked via the Third Space app and can be in high demand, so book ahead.
Is Third Space Marylebone good? What do reviews say?
It reviews well, with members praising cleanliness, equipment quality, the classes and a friendly, attentive team, plus the pool and changing facilities. Some find it smaller and more personal than other sites. For the latest picture, check live Google and Trustpilot reviews and consider a tour or day pass.
📚 Related Guides
Third Space & gyms:
Gym rewards & cover:
- Gym & Health Insurance Rewards
- Health Insurance With Gym Membership
- Vitality & Apple Watch
- Is Vitality Worth It?
- Third Space — Marylebone club & facilities pages; The Marylebone Hotel fitness pages; Marylebone Village listings; member reviews via Google/Trustpilot (2026)
- Going Private UK independent editorial research (2026)
⚠️ Important Disclaimer & Editorial Independence
Going Private UK is an independent editorial site. We are not affiliated with, endorsed by or sponsored by Third Space. Names and trademarks belong to their respective owners, used for descriptive purposes only. This guide is general information only.
Facilities, classes, pool size, membership options and prices vary and change over time; we do not publish membership prices as Third Space quotes individually. Always confirm current facilities, class timetables and prices directly with Third Space Marylebone before joining. Any health-insurance comparison is general information, not financial advice; cover, benefits and any gym-linked rewards vary by insurer and policy — confirm with the provider. There is no direct partnership between Third Space and any insurer mentioned.
Commercial relationships: Going Private UK may receive commission when readers compare health insurance through our links — this funds independent research but does not affect our analysis.
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